package day10;
/*
*  构造方法 this super
*
*
* */
public class Test1_2 {
    public static void main(String[] args) {
        A a = new A(1);
    }
}

class A extends B{
    public A(){
        System.out.println("A");
    }

    public A(int a){
        this();
        System.out.println("Aa");
    }
}
class B{
    public B(){
        System.out.println("B");
    }
}
